{"success":false,"msg":"Subquery returns more than 1 row<br>select sk.gio_thi_dau, sk.event_id, sk.noi_dung_id, sk.dieu, sk.heat,\n                ifnull(nd.ten_hang,concat('<b>',sk.vong_dau,'<\/b>')) as ten_hang,\n                case when sk.event_id is null then '' else sk.vong_dau end as vong_dau,\n                if(sk.event_id_before=0,'',event_id_before) as event_id_before, 0 as so_doi,\n                if(nd.ten_hang is null, 0, 1) as is_thi_dau,\n            (select b.event_id from kv_su_kien b where b.event_id_before=sk.event_id and b.giai_dau_id='2018HN') as event_id_after\n            from kv_su_kien sk\n            left join kv_dm_hang nd on sk.noi_dung_id=nd.id and sk.giai_dau_id=nd.giai_dau_id\n            where sk.giai_dau_id='2018HN' order by sk.id"}